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The disadvantage of the 1 mm punch is that the tissue obtained is almost impossible to see at times due to small size, and the 1.5 mm biopsy is preferred in most cases. The common punch size used to diagnose most inflammatory skin conditions is the 3.5 or 4 mm punch. [citation needed] [2]
A small scalpel is utilized to cut around the visible tumor. Unlike a normal surgical excision, a Mohs surgery cut is performed at a beveling between 10 and 45 degrees to allow visibility of all skin layers during pathological diagnosis. [8] A very small surgical margin is utilized, usually with 1 to 1.5 mm of "free margin" or uninvolved skin.
Follicular unit extraction (FUE; also follicular unit excision or follicular transfer, FT) Performed under local anaesthetic, FUE procedure involves the harvesting of individual hair follicles from the donor site at the back of the head using a tiny 0.8 - 1mm punch which creates an incision around the top of the follicle and extracts them directly from the scalp.
"Positive margins" means that disease was found, and a wider excision may be needed, depending on the diagnosis. [citation needed] When intact removal is not indicated for a variety of reasons, a wedge of tissue may be taken in an incisional biopsy. In some cases, a sample can be collected by devices that "bite" a sample.
Endoscopic pilonidal treatment, which uses a small camera to guide the surgeon in removing hair, is a newer method of treatment that has minimal pain and quick healing compared to surgery. A literature review of 497 patients found that the average endoscopic operation time was 34.7 minutes, and the average healing time was 32.9 days.
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The loop electrosurgical excision procedure (LEEP) is one of the most commonly used approaches to treat high grade cervical dysplasia (CIN II/III, HGSIL) and early stage cervical cancer discovered on colposcopic examination. In the UK, it is known as large loop excision of the transformation zone (LLETZ). It is considered a type of conization. [1]
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